see attached picture of chassis of Hantarex MTC9000 (its a monitor i just bought for 10 quid on ebay).
the green plug that you can see is attached to 4 wires that go to the yoke. it was plugged into the green socket at the bottom left of the photo.
but i a bit confused about this

i had assumed that socket was for the input video signal. is that correct?
so i am now wondering if the plug should actually be connected to one of the two green sockets in the centre of the board?
can anyone advise?
is the chassis complete or something missing?
if the plug was actually connected correctly - then where are the inputs for this board?
i have a remote adjusment board that connects via cable to the white pin connector.
thanks for you help on this!